{"nhtsa_id":54377,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-04-07","date":"1997-03-07","document_id":"210297","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:MANUAL TRANSMISSION","mfr_system":null,"summary":"A THUMPING OR BUMPING NOISE MAY BE HEARD COMING FROM THE TRANSMISSION TUNNEL AREA ON ACCELERATION OR WHILE DRIVING OVER BUMPY ROADS. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/54377","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"manual-transmission","name":"Manual transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":1993,"year_to":1997,"match":"exact","vehicle_ids":["1993_jeep_grand-cherokee","1994_jeep_grand-cherokee","1995_jeep_grand-cherokee","1996_jeep_grand-cherokee","1997_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND WAGONEER","year_from":1993,"year_to":1993,"match":"exact","vehicle_ids":["1993_jeep_grand-wagoneer"]},{"make":"JEEP","model":"GRAND WAGONEER","year_from":1994,"year_to":1997,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}